CA2454748C - Procede pour evaluer les signaux de mesure d'un appareil de mesure fonctionnant selon le principe du temps de propagation - Google Patents

Procede pour evaluer les signaux de mesure d'un appareil de mesure fonctionnant selon le principe du temps de propagation Download PDF

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Publication number
CA2454748C
CA2454748C CA2454748A CA2454748A CA2454748C CA 2454748 C CA2454748 C CA 2454748C CA 2454748 A CA2454748 A CA 2454748A CA 2454748 A CA2454748 A CA 2454748A CA 2454748 C CA2454748 C CA 2454748C
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CA
Canada
Prior art keywords
fill level
signals
measurement
signal
measurement device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA2454748A
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English (en)
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CA2454748A1 (fr
Inventor
Roland Mueller
Herbert Schroth
Stefan Cramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of CA2454748A1 publication Critical patent/CA2454748A1/fr
Application granted granted Critical
Publication of CA2454748C publication Critical patent/CA2454748C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/80—Arrangements for signal processing
    • G01F23/802—Particular electronic circuits for digital processing equipment
    • G01F23/804—Particular electronic circuits for digital processing equipment containing circuits handling parameters other than liquid level
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un procédé qui permet notamment l'extrapolation d'une valeur de mesure aux extrémités supérieure et inférieure d'une plage de mesure où, en règle générale, aucune mesure directe n'est possible, par la superposition de signaux parasites, par exemple par réflexion sur une antenne de radar. Si les signaux parasites sont puissants, du fait, par exemple, de la propre résonance du contenant ou de la tubulure où est monté l'appareil de mesure, il est alors possible d'utiliser le signal de niveau direct lorsque son amplitude, par superposition avec un signal parasite, permet de le détecter, alors que, lorsqu'il se trouve entre deux signaux parasites qu'il ne dépasse pas, une valeur de niveau peut être interpolée avec décalage du signal du point de réflexion. Ce procédé s'adapte automatiquement à une situation de mesure donnée, alors que pour certains procédés connus jusqu'alors, l'utilisateur devait choisir entre une mesure par décalage du signal EOL et une mesure par écho de niveau direct.
CA2454748A 2001-07-27 2002-07-26 Procede pour evaluer les signaux de mesure d'un appareil de mesure fonctionnant selon le principe du temps de propagation Expired - Lifetime CA2454748C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10136565 2001-07-27
DE10136565.9 2001-07-27
PCT/EP2002/008368 WO2003016835A1 (fr) 2001-07-27 2002-07-26 Procede pour evaluer les signaux de mesure d'un appareil de mesure fonctionnant selon le principe du temps de propagation

Publications (2)

Publication Number Publication Date
CA2454748A1 CA2454748A1 (fr) 2003-02-27
CA2454748C true CA2454748C (fr) 2011-10-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2454748A Expired - Lifetime CA2454748C (fr) 2001-07-27 2002-07-26 Procede pour evaluer les signaux de mesure d'un appareil de mesure fonctionnant selon le principe du temps de propagation

Country Status (6)

Country Link
US (1) US8931339B2 (fr)
EP (1) EP1412710B1 (fr)
JP (1) JP4095960B2 (fr)
CN (1) CN1270167C (fr)
CA (1) CA2454748C (fr)
WO (1) WO2003016835A1 (fr)

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CN104634417A (zh) * 2013-11-12 2015-05-20 罗斯蒙特储罐雷达股份公司 雷达料位计系统和反射器装置

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Also Published As

Publication number Publication date
US8931339B2 (en) 2015-01-13
CN1270167C (zh) 2006-08-16
JP2005514586A (ja) 2005-05-19
CN1535374A (zh) 2004-10-06
CA2454748A1 (fr) 2003-02-27
WO2003016835A1 (fr) 2003-02-27
JP4095960B2 (ja) 2008-06-04
EP1412710B1 (fr) 2015-09-02
EP1412710A1 (fr) 2004-04-28
US20110094299A1 (en) 2011-04-28

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